package cn.tedu.jdbc;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.Scanner;

public class JDBCDemo2 {
    public static void main(String[] args) throws SQLException, ClassNotFoundException {
        String password = null;
        Scanner sc = new Scanner(System.in);
        Class.forName("com.mysql.cj.jdbc.Driver");
        Connection connection = DriverManager.getConnection("jdbc:mysql://localhost:3306/tedu?characterEncoding=utf8&useSSL=false&serverTimezone=Asia/Shanghai&rewriteBatchedStatements=true", "root", "123456");
        Statement statement = connection.createStatement();
        while (true) {
            System.out.println("请输入用户名：");
            if (sc.nextLine().equals("Tony")) {
                System.out.println("请输入新密码：");
                password = sc.nextLine();
                String sql = "UPDATE userinfo set password='" + password + "'where username='Tony'";
                int i = statement.executeUpdate(sql);
                if (i > 0) {
                    System.out.println("修改成功！");
                    break;
                } else {
                    System.out.println("修改失败！");
                }
            } else {
                System.out.println("用户名不存在！");
            }
        }
        connection.close();
    }
}
